172 



BULLETIN 58^ UNITED STATES NATIONAL MUSEUM. 



The female lacks preanal and femoral pores. 



Habitat. — This remarkable species is an inhabitant of the Malayan 

 peninsula, the Natuna Islands, and Borneo. 



A single specimen presented by Mr. Pryer to the British Museum as 

 having been obtained by his Japanese collector in the Riu Kiu Islands, 

 is the only one thus far recorded east and north of the region indicated 

 above. As no other collectors have found it in the Riu Kius or the 

 intervening regions, I may perhaps be justified in expressing a doubt 

 as to the correctness of the locality. It may be remembered that 

 Prj^er himself did some collecting in Borneo in 1880, and it is possible 

 that the specimen in question may have become mixed up with the 

 Riu Kiu collection. 



List of specimens of Ptychozoon horsfeldii. 



Genus HEMIDACTYLUSa Oken. 



1817. Hemidactylus Oken, Isis, 1817, p. 1183 (based on Cuvier's "Hemidactyles," 



type "Gecko tuberculeux Daudin"). 

 1843. Tachybates Fitzinger, Syst. Rept., p. 105 (type, H. mabouia). 

 1843. Pnoepus Fitzinger, Syst. Rept., p. 106 (type, H. javanicus=H.frenatus). 



The above synonymy refers chiefly to the species occurring within 

 our limits. For others see my "Land Reptiles of the Hawaiian 

 Islands." ^ 



Only one species of true Hemidactylus has been reported from our 

 territory thus far. Another is here recorded for the first time. They 

 may be distinguished as follows: 



«' Inner digit very small, with a short sessile terminal joint, the claw of which is 

 usually very minute; males with the femoral pores continued across the belly. 



H,frenatus, p. 172. 



a^ Inner digit not disproportionately small, well developed, with a free erect terminal 



joint, which is provided with a well-developed claw; males with femoral series 



of pores interrupted on the middle of the belly H. bowringii, p. 176. 



HEMIDACTYLUS FRENATUS c Dumeril and Bibron. 



1836. Hemidactylus frenatus Dumeril and Bibron, Erpet. Gen., Ill, p. 366 (type- 

 localities, Java and Timor). — Boulenger, Cat. Liz. Brit. Mus., I, 1885, 

 p. 120 (Taiwan fu. South Formosa; Korea). — Brown, Proc. Phila. Acad., 

 1902, p. 183 (Loo Choo Islands, probably Okinawa shinia). 



1860. Hemidactylus inornatus Hallowell, Proc. Phila. Acad., 1860, p. 492 (type- 

 locality, Okinawa shima; type, LT.S.N.M. No. 7429; Stimpson, collector). 



1868. Hemidactylus lomjiceps Cope, Proc. Phila. Acad., 1868, p. 320 (type-locality, 

 Manila, Philippine Islands.). 



oFrom rffii, half; SaKTvXoi;, digit. 



ft Proc. U. S. Nat. Mus., XXI, 1899, p. 791. 



c Signifying bridled; alluding to the dusky streak on the lores {frenum). 



